@clerk/nextjs (npm) — known CVEs & security advisories

Known CVE vulnerabilities and GitHub Security Advisories affecting the npm package @clerk/nextjs, with affected version ranges, CVSS severity, EPSS exploit prediction, and CISA KEV status.

CVEs (4)

• CVE-2026-41248 — CVSS 9.1 (critical): Clerk JavaScript is the official JavaScript repository for Clerk authentication. createRouteMatcher in @clerk/nextjs, @clerk/nuxt, and…
• CVE-2024-22206 — CVSS 9.0 (critical): Clerk helps developers build user management. Unauthorized access or privilege escalation due to a logic flaw in auth() in the App Router…
• CVE-2026-42349 — CVSS 8.1 (high): Clerk JavaScript is the official JavaScript repository for Clerk authentication. has(), auth.protect(), and related authorization…
• CVE-2025-53548 — CVSS 7.5 (high): Clerk helps developers build user management. Applications that use the verifyWebhook() helper to verify incoming Clerk webhooks are…